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fix(sdk): DSPX-1561 reject manifests with no key access objects - #433
loadTDF refuses a manifest whose encryptionInformation.keyAccess is empty or absent with SDK.MalformedTDFException ("no key access objects"), before any KAS request, integrity check, or assertion check. The payload key is assembled only from key access objects, so such a file can't be decrypted.
Key reconstruction also fails with SDK.SplitKeyException when no split was found, so no path continues with the all-zero starting value of the payload key.
SDK.readManifest, isTDF, and manifest inspection are unchanged.
The payload key is assembled only from key access objects. A manifest
whose encryptionInformation.keyAccess is empty or absent is now refused
as a malformed TDF when it is loaded, before any KAS, integrity or
assertion step, with a message that says it has no key access objects.
Key reconstruction also fails if no split is found.
Signed-off-by: Dave Mihalcik <dmihalcik@virtru.com>
TDF loading now rejects manifests with absent or empty key-access objects before KAS, integrity, or assertion processing. For encrypted payloads, loading also throws SDK.SplitKeyException when key-access processing reconstructs no split key.
Changes: TDF Key-Access Validation
Layer / File(s)
Summary
Reject manifests with no key-access objects sdk/src/main/java/io/opentdf/platform/sdk/Manifest.java, sdk/src/main/java/io/opentdf/platform/sdk/TDF.java, sdk/src/test/java/io/opentdf/platform/sdk/TDFKeyAccessTest.java
Manifest validation reports when keyAccess is absent. TDF loading rejects absent or empty key-access lists before KAS access. Tests cover rejection before any unwrap and successful decryption with one unwrap.
Require a reconstructed split key sdk/src/main/java/io/opentdf/platform/sdk/TDF.java
For encrypted payloads, TDF loading throws SDK.SplitKeyException when no split IDs were found.
opentdf/java-sdk#399: Updates manifest key-access validation and the TDF.loadTDF path.
Suggested reviewers:sujankota, mkleene
Merge Risk: Minimal · up to 65bb5
The change rejects malformed manifests earlier without an established regression. No concrete merge-blocking risk remains.
Pre-merge checks: 4 · 1
Failed checks: 1 warning
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Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentat…
Write docstrings for the functions missing them to satisfy the coverage threshold.
Passed checks: 4 passed
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The title clearly and concisely describes the main change: the SDK rejects manifests with no key access objects.
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Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 3 functions across 3 files.
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Write docstrings for the functions missing them to satisfy the coverage threshold.
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A rabbit checks the keys with care, No empty list can pass from there. One unwrap brings the plaintext near, No split key? The error’s clear. The burrow hums; the checks are done.
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🤖 I have created a release *beep* *boop*
---
<details><summary>0.20.0</summary>
##
[0.20.0](v0.19.1...v0.20.0)
(2026-11-12)
### Features
* **sdk,cmdline:** HTTP range TDF loading and partial decrypt
(DSPX-5113, DSPX-5115)
([#420](#420))
([9437084](9437084))
* **sdk,cmdline:** move HTTP range TDF loading in cmdline DSPX-5113
([#440](#440))
([059c369](059c369))
* **sdk:** DSPX-4584 stream the TDF manifest, remove the ~21.7M segment
ceiling ([#399](#399))
([35da51f](35da51f))
* **sdk:** support ML-KEM rewrap session keys
([#388](#388))
([8b3f321](8b3f321))
### Bug Fixes
* **main:** bump org.bouncycastle:bcprov-jdk18on from 1.84 to 1.85
([#408](#408))
([1daa64a](1daa64a))
* **sdk:** align TDF3 IV construction
([#412](#412))
([214e19e](214e19e))
* **sdk:** don't re-run codegen when attaching sources
([#419](#419))
([8fc820c](8fc820c))
* **sdk:** DSPX-1561 reject manifests with no key access objects
([#433](#433))
([4e6bc91](4e6bc91))
* **sdk:** DSPX-4589 zip64 EOCD sentinels, truncated archive detection,
and UTF-8 entry names
([#398](#398))
([e31db09](e31db09))
* **sdk:** harden ZipReader central directory parsing against hostile
fields (DSPX-5103)
([#418](#418))
([a09eeb9](a09eeb9))
* **sdk:** missed one on the previous pull
([#415](#415))
([1ab8a3c](1ab8a3c))
* **sdk:** read a manifest.json entry from TDF archives
([#406](#406))
([f7e0c10](f7e0c10))
* **sdk:** read platform base keys from structured configuration
([#429](#429))
([4092636](4092636))
* **sdk:** read the TDF spec version from all three places
([#411](#411))
([0a10e74](0a10e74))
* **sdk:** reject empty TDF manifests
([#422](#422))
([762fe40](762fe40))
* **sdk:** reject key access entries without URLs
([#423](#423))
([525e5b0](525e5b0))
* **sdk:** update dependencies
([#410](#410))
([b3f293e](b3f293e))
* **sdk:** without this the `enforcer` step fails
([#414](#414))
([1065499](1065499))
</details>
---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).
Co-authored-by: opentdf-automation[bot] <149537512+opentdf-automation[bot]@users.noreply.github.com>
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Proposed Changes
loadTDFrefuses a manifest whoseencryptionInformation.keyAccessis empty or absent withSDK.MalformedTDFException("no key access objects"), before any KAS request, integrity check, or assertion check. The payload key is assembled only from key access objects, so such a file can't be decrypted.SDK.SplitKeyExceptionwhen no split was found, so no path continues with the all-zero starting value of the payload key.SDK.readManifest,isTDF, and manifest inspection are unchanged.Split out of #432 (draft; the complete change). Cross-SDK counterparts: opentdf/platform#4302, opentdf/web-sdk#1136; cross-SDK test: opentdf/tests#703.
Compatibility: a TDF with no key access objects now fails at load with a malformed-TDF error instead of a later, less specific failure.
Checklist
Testing Instructions
mvn -pl sdk,cmdline -am test(new cases inTDFKeyAccessTest).Summary by CodeRabbit